This information will be updated when a field office receives a new application or makes a final determination on an application.
- Miles City Field Office (includes APDs within the boundaries of the Billings Field Office)
- Great Falls Oil and Gas Field Station (includes APDs within the boundaries of Lewistown, Malta, Butte, Dillon, and Missoula Field Offices and the Havre and Glasgow Field Stations)
- North Dakota Field Office (includes APDs within boundaries of the South Dakota Field Office)